KVM: Communicate cr8 changes to userspace

This allows running 64-bit Windows.

Signed-off-by: Sheng Yang <sheng.yang@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/kvm/vmx.c b/drivers/kvm/vmx.c
index a9b4cb51dec8..cd999c0a24c4 100644
--- a/drivers/kvm/vmx.c
+++ b/drivers/kvm/vmx.c
@@ -1831,7 +1831,8 @@ static int handle_cr(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
                         vcpu_load_rsp_rip(vcpu);
                         set_cr8(vcpu, vcpu->regs[reg]);
                         skip_emulated_instruction(vcpu);
-                        return 1;
+                        kvm_run->exit_reason = KVM_EXIT_SET_TPR;
+                        return 0;
                 };
                 break;
         case 2: /* clts */